I printed out a Freddie Chang Single Mouth Moose BVR Horn 1vo box plan for the Feastrex D5nf. The problem is that the the sketch of the finished box shows the driver position a little down from the top. But the box piece plan sketches show the driver right at the top. which is correct?

Hi there,
i'm no authority on this, but i did see somewhere that the driver shouldnt be placed right at the top of the front baffle - it might have been on the frugal website.
I've been reading up a bit about 'speaker desighn just recently and drive units are placed to stop the formation of standing waves, maybe Dave (planet10) would be better qualified to answer.
Haveing said that, most of the single mouth bvr enclosures have the driver placed roughly 1/3rd the ways down the front baffle.

The only sketch I have is the one alongside the technical piece drawings.
It doesn't have any dimensions on it, but it looks like the driver center is about 5" from the top of the cabinet. Is that the original sketch you were talking about? Or was there another drawing that I didn't notice?

The project I hope to do for the Feastrex is farrrrrrr in the future, probably. I just hope and dream to have those. I'll be starting on some kind of project for the new Alpair 12.2 or .3 with the fantastic paper cone and all the improvements that Mark is bringing to the table next spring. Who knows maybe I'll love it so much that I'll forget about the Feastrex! But I doubt it at this point. I might start sooner with a project using the Markaudio WHP-70.

'll be starting on some kind of project for the new Alpair 12.2 or .3 with the fantastic paper cone and all the improvements that Mark is bringing to the table next spring. Who knows maybe I'll love it so much that I'll forget about the Feastrex!

Pretty much said it all in the title. I am watching the development of Mark's 10.2 MAOP with great interest. I think it's more interesting than the CSS EL-70. We'll see how that changes my focus on Full Range!